CN107225438A - Soleplate spherical groove mirror surface treatment technique under artificial intervertebral disk - Google Patents
Soleplate spherical groove mirror surface treatment technique under artificial intervertebral disk Download PDFInfo
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- CN107225438A CN107225438A CN201710588530.6A CN201710588530A CN107225438A CN 107225438 A CN107225438 A CN 107225438A CN 201710588530 A CN201710588530 A CN 201710588530A CN 107225438 A CN107225438 A CN 107225438A
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- grinding
- soleplate
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- mirror surface
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B29/00—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents
- B24B29/02—Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents designed for particular workpieces
Abstract
The present invention provides soleplate spherical groove mirror surface treatment technique under a kind of artificial intervertebral disk, and titanium alloy workpiece concave surface sequentially passes through rough lapping, smooth grinding, artificial brilliant polish, machine brilliant polish, cleaning, mirror ultrafinish, cleaning and the processing of stoving process step.The present invention can and concave surface smaller to titanium alloy workpiece it is deep and irregular product carries out mirror-polishing processing, its surface roughness reaches less than 0.05 μm；Make full use of grinding and polish respective advantage, both are perfectly combined, the efficiency of mirror surface treatment is greatly improved, its cost is about the 1/10 of MMP processing；Its surface machining vestige is handled compared to MMP simultaneously to be removed completely；Last mirror-polishing processing is carried out using walnut shell abrasive after manual finishing polish, makes its product more more consistent than manual mirror surface treatment product appearance.
Description
Technical field
The present invention relates to medicine equipment technology field, soleplate is spherical under more particularly to a kind of artificial intervertebral disk
Groove mirror surface treatment technique.
Background technology
Because titanium alloy has the characteristics such as high mechanical performance, good decay resistance and biocompatibility, therefore
Using very extensive in orthopedic medical device.
But it is due to the chemical reactivity height of titanium alloy, thermal conductivity factor is low, and viscosity is big, so single uses polishing or grinding
Method be difficult its surface is reached mirror effect, therefore needing to carry out product (such as artificial cervical intervertebral of mirror surface treatment
Soleplate under disk, specific product is as Figure 1-4) in use will be subject to certain restrictions.
The titanium alloy surface mirror processing method generally used at present has two kinds, and a kind of is traditional polishing mode such as disclosure
Number A of CN 103273384 Chinese patent application gives one kind《Surface of metal titanium mirror polishing method》, its technological process is such as
Shown in lower：1st, titanium workpiece surface is once roughly ground with 80 mesh nylon wheels；2nd, titanium workpiece surface is entered with 240 mesh nylon wheels again
The secondary corase grind of row；3rd, titanium workpiece surface is carried out once with sisal+wax, polished twice；4th, with button cotton piece buff+wax to titanium workpiece surface
Carry out once, secondary light extraction；5th, letter out is carried out to titanium workpiece surface with spinning cotton piece buff+wax, you can realize minute surface in titanium workpiece surface
Effect.This technique is mainly processed by shot blasting that it carries out mirror mainly for the larger big workpiece of plane or concave surface radian with dumping
Face is handled, but its and concave surface smaller to titanium workpiece is deeply irregular can not to carry out mirror surface treatment.
Second method is advanced MMP technologies, and Super-Precision ＆ Minuteness Processing technology (abbreviation MMP technologies), is the patent of Switzerland
Technology, its machinery created, physics, chemical synthesis processing scheme, its Core Superiority is can to control the surface roughness of object,
And the size and profile of titanium workpiece are not required, but its treatment effeciency is than relatively low, one when MMP before processing roughness is relatively low
As processing time be 4~5h, if when roughness is higher its processing time be 8~12h.Because MMP technical characterstic early stage is public
The artificial cervical interverbebral disc of department carries out external coordination mirror surface treatment with MMP technologies in E-TEN Corp's work of Kunshan to its concave surface always, its surface
Roughness requirements are no more than 0.1 μm and meet company's requirement, but there is also a problem because its processing efficiency is than relatively low, therefore
MMP technology processing charges is higher, and the lower soleplate expense of general processing monolithic artificial cervical interverbebral disc is 100RMB, and it is accounted for entirely
The large percentage of product cost；Lower its concave surface of soleplate is still it is observed that mach lines after MMP processing simultaneously.
Therefore, it is badly in need of providing a kind of machining accuracy height and the novel work of the low titanium alloy workpiece concave surface mirror surface treatment of cost
Skill.
The content of the invention
The technical problems to be solved by the invention are：In order to overcome in the prior art traditional roughness of polished be unsatisfactory for and
Higher and there is a situation where to machine lines in order to solve MMP processing expenses, the present invention provides a kind of artificial intervertebral disk
Lower soleplate spherical groove mirror surface treatment technique, mutually being arranged in pairs or groups with hand polish by advanced milling apparatus reaches product concave surface roughness
To less than 0.05 μm, while the effect of product mirror surface treatment can be substantially increased with 50 products of time processing with milling apparatus
Rate, reduces the processing charges of product mirror surface treatment.
The present invention solves its technical problem technical scheme to be taken：Soleplate spherical groove mirror under a kind of artificial intervertebral disk
Face handling process, titanium alloy workpiece concave surface sequentially passes through rough lapping, smooth grinding, artificial brilliant polish, machine brilliant polish, clear
Wash, mirror ultrafinish, cleaning and the processing of stoving process step.
A certain amount of coarse grained abrasive is put into the grinding groove of flow-ground machine specifically, the rough lapping is specifically included, if
The rotating speed for putting flow-ground machine is 130~150rpm, and the time is 20~30min, starts flow-ground machine and then workpiece is uniform
It is put into flow-ground machine and is ground, workpiece concave surface roughness is not more than 0.4 μm after grinding.Coarse grained abrasive is a kind of in this step
The artificial corase grind abrasive material of German import, it is to remove machining lines that it, which is acted on,.
Specifically, the smooth grinding specifically includes the grinding groove that a certain amount of fine grinding resinous abrasive materials are put into flow-ground machine
In, the rotating speed for setting flow-ground machine is 200~230rpm, and the time is 2.5~3h, is started after flow-ground machine that workpiece is uniform
It is put into grinding groove and carries out smooth grinding, workpiece concave surface roughness is not more than 0.2 μm after grinding.The fine grinding resin used in this step
Abrasive material is a kind of artificial resin abrasive material of German import, and it is to remove the grinding marks that rough lapping leaves that it, which is acted on,.
It is preferred that, when the flow-ground machine in rough lapping and smooth grinding is ground, one time grinding work-piece quantity is no more than 50.
Specifically, the artificial brilliant polish specifically includes the workpiece flannelette that will be rinsed well after smooth grinding and after drying up
Dump and front plan of the workpiece in addition to concave surface and the back side and side be polished after upper antiscuffing paste, polishing time is 2~4min,
It is required that being polished to sub- minute surface.
Wool bistrique is installed on mill quarter machine specifically, the machine brilliant polish is specifically included, setting speed is
5000-7000rpm is polished to concave surface, needs dozen antiscuffing paste before polishing at wool bistrique, the time of every workpiece polishing is 2
~4min, polishing back concave surface roughness is not more than 0.1 μm.
The antiscuffing paste used in artificial brilliant polish and the step of machine brilliant polish two is white antiscuffing paste, specially 1985
Chinese wax is polished, is the finishing polish buffing wax of versatility, its effect is titanium alloy concave surface is reached sub- mirror status.
A certain amount of walnut shell abrasive material is put into grinder specifically, the mirror ultrafinish is specifically included, setting rotating speed is
250~300rpm, the time is 1.5~2h；Start that workpiece is uniformly put into the grinding groove of grinder after grinder and carry out minute surface
Grinding.The walnut shell abrasive material used in the step is German import mirror finish abrasive material, and a certain amount of abrasive pastes need to be put into during grinding,
Its effect makes titanium alloy concave surface reach mirror status.
It is preferred that, the grinder that the mirror ultrafinish step is used is flowing light finishing machine.Flowing light finishing machine is dry type
Grinder, and dry grinding machine is smaller, once at most places 30 products.
Above-mentioned technique is applied to the working process of the lower soleplate concave surface of artificial cervical interverbebral disc, due to artificial cervical intervertebral
Roughness after the lower soleplate concave surface machining of disk is generally 0.8 μm or so, if entered by the way of polishing of dumping to it
Row processing, because the size for needing to remove is larger and some positions of concave surface are difficult to throw, it inevitably results in concave configuration distortion,
Therefore, it can now be ensured well outside concave surface again while machining lines is removed using rough lapping and the collocation of smooth grinding
Shape is undistorted.In mirror finish, it is contemplated that the mode mirror finish efficiency comparison of use grinding is low and concave surface is in its rough surface
Be easy to occur in the case that degree is higher abrasive do not flow or flow in concave surface it is slower so that mirror finish efficiency drops significantly
It is low, artificial brilliant polish is now added to the sub- mirror status in concave surface, because wool dumps (i.e. wool bistrique) removal size very
It is small, therefore distortion will not be caused to concave configuration, simultaneously because lower soleplate recessed surface area is smaller, artificial polishing time compares
Short, efficiency high.During last mirror surface treatment, because the affinity of titanium alloy and other materials is than larger, therefore in polishing dynamics not
It can cause surface can not minute surface, therefore last using the progress of walnut shell lapping mode completely with the relatively solid particles for introducing of dumping
Mirror surface treatment, not only can guarantee that the uniformity of minute surface simultaneously but also had been avoided that artificial polishing is caused constantly due to polishing difficulty
Do over again or can not realize complete minute surface at all.
The beneficial effects of the invention are as follows：
1) present invention can the deeply irregular product progress mirror-polishing processing in and concave surface smaller to titanium alloy workpiece, its surface
Roughness reaches less than 0.05 μm；
2) present invention makes full use of grinding and polishes respective advantage, and both are perfectly combined, makes the effect of mirror surface treatment
Rate is greatly improved, and its cost is about the 1/10 of MMP processing；Its surface machining vestige is handled compared to MMP simultaneously to be gone completely
Remove；
3) last mirror-polishing processing is carried out using walnut shell abrasive after the manual finishing polish of the present invention, due to titanium alloy minute surface
Polish difficulty big, and the position this time handled is irregular concave surface, therefore can not be by the line for generation of dumping during manual finishing polish
Road is removed completely, and ridge orientation, which is not present, using walnut shell grinding can make minute surface more thorough, make the roughness of concave surface further
Reduction, so that its product is more more consistent than manual mirror surface treatment product appearance.
Brief description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural representation of soleplate under artificial intervertebral disk；
Fig. 2 is Fig. 1 cross-sectional view；
Fig. 3 is the assembling structure schematic diagram of lower soleplate；
Fig. 4 is Fig. 3 cross-sectional view.
In figure：1st, upper soleplate, 2, lower soleplate, 3, ball pad, 4, concave surface.
Embodiment
Presently in connection with accompanying drawing, the present invention is described in detail.This figure is simplified schematic diagram, is only illustrated in a schematic way
The basic structure of the present invention, therefore it only shows the composition relevant with the present invention.
As Figure 1-4, a kind of artificial cervical interverbebral disc, including upper soleplate 1, lower soleplate 2 and it is arranged on the and of soleplate 1
There is concave surface 4, ball pad 3 is placed in concave surface 4, and concave surface 4 is needed by mirror on ball pad 3 between lower soleplate 2, lower soleplate 2
Reason, the roughness requirements of upper soleplate 1 are 0.8 μm claimed below than relatively low, and the concave surface 4 of lower soleplate 2 require 0.1 μm it is claimed below
Height, and other positions still require 0.8 μm, therefore, this time mirror surface treatment is carried out just for the concave surface 4 of lower soleplate 2, roughness
Also detected just for concave surface 4.
Embodiment one：
The spherical groove mirror surface treatment technique of soleplate 2 under a kind of artificial intervertebral disk of the present invention, titanium alloy workpiece is artificial cervical
Soleplate 2 under interverbebral disc, its mirror surface treatment technological process of concave surface 4 is as follows：
Step 1：In rough lapping, the grinding groove that a certain amount of coarse grained abrasive is put into flow-ground machine, flow-ground machine is set
Rotating speed be 130rpm, the time is 20min, starts and flow-ground machine and then uniformly is put into flow-ground machine by lower soleplate 2
Row grinding, one time grinding work-piece quantity does not allow more than 50, and the roughness requirements of workpiece concave surface 4 are no more than 0.4 μm after grinding.
The coarse grained abrasive of use is a kind of artificial corase grind abrasive material of German import, and it is to remove machining lines that it, which is acted on,.
Step 2：Smooth grinding, a certain amount of fine grinding resinous abrasive materials are put into the grinding groove of flow-ground machine, flowing is set
The rotating speed of grinder is 200rpm, and the time is 2.5h, starts and workpiece is uniformly put into progress essence in grinding groove after flow-ground machine
Grinding, one time grinding work-piece quantity is no more than 50, and the roughness requirements of workpiece concave surface 4 are no more than 0.2 μm after grinding.Use
It is a kind of artificial resin abrasive material of German import to refine resinous abrasive materials, and it is to remove the grinding marks that rough lapping leaves that it, which is acted on,.
Step 3：Artificial brilliant polish, the lower soleplate 2 after rinsing well and dry up after smooth grinding is dumped with flannelette upper white
Front plan of the workpiece in addition to concave surface 4 and the back side is polished with side after color antiscuffing paste, polishing time is 2min, it is desirable to thrown
Light is to sub- minute surface.
Step 4：Machine brilliant polish, wool bistrique is installed on mill quarter machine, and setting speed is 5000rpm to concave surface 4
It is polished, needs break white antiscuffing paste at wool bistrique before polishing, and the time of every workpiece polishing is 2min, polishes back concave surface
4 roughness requirements are no more than 0.1 μm.
The antiscuffing paste used in step 3 and step 4 is white antiscuffing paste, and specially 1985 polishing Chinese wax, are versatilities
Finishing polish buffing wax, its effect is titanium alloy concave surface 4 is reached sub- mirror status.
Step 5：Cleaning, is put into ultrasonic cleaner by the lower soleplate 2 after polishing, scavenging period is 10min, will polish residual
The antiscuffing paste stayed is removed, and is then dried up with air gun.
Step 6：Mirror ultrafinish, a certain amount of walnut shell abrasive material is put into grinder, and setting rotating speed is 250rpm, and the time is
1.5h；Start uniformly to be put into lower soleplate 2 in the grinding groove of grinder after grinder and carry out mirror ultrafinish.Used in the step
Walnut shell abrasive material is German import mirror finish abrasive material, and a certain amount of abrasive pastes need to be put into during grinding, and its effect makes titanium alloy recessed
Face 4 can reach mirror status, and the grinder that the mirror ultrafinish step is used is flowing light finishing machine.Flowing light finishing machine is dry
Formula grinder, and dry grinding machine is smaller, once at most places 30 products.
Step 7：Cleaning and drying, are put into ultrasonic cleaner, scavenging period is 10min by lower soleplate 2 after mirror ultrafinish,
Cleaning is put into baking oven after completing air gun drying, and the temperature for setting baking oven is 80 DEG C, and drying time is 15min, takes out and treats after drying
Circulation.
After being ground more than and polishing Combined Processing, the outward appearance and roughness of its concave surface 4 meet roughness requirements and
Roughness and outward appearance are superior to MMP processing.
Embodiment two：
The spherical groove mirror surface treatment technique of soleplate 2 under a kind of artificial intervertebral disk of the present invention, titanium alloy workpiece is artificial cervical
Soleplate 2 under interverbebral disc, its mirror surface treatment technological process of concave surface 4 is as follows：
Step 1：In rough lapping, the grinding groove that a certain amount of coarse grained abrasive is put into flow-ground machine, flow-ground machine is set
Rotating speed be 150rpm, the time is 30min, starts and flow-ground machine and then uniformly is put into flow-ground machine by lower soleplate 2
Row grinding, one time grinding work-piece quantity does not allow more than 50, and the roughness requirements of workpiece concave surface 4 are no more than 0.4 μm after grinding.
The coarse grained abrasive of use is a kind of artificial corase grind abrasive material of German import, and it is to remove machining lines that it, which is acted on,.
Step 2：Smooth grinding, a certain amount of fine grinding resinous abrasive materials are put into the grinding groove of flow-ground machine, flowing is set
The rotating speed of grinder is 230rpm, and the time is 3h, and workpiece is uniformly put into grinding groove after startup flow-ground machine and carries out lappingout
Mill, one time grinding work-piece quantity is no more than 50, and the roughness requirements of workpiece concave surface 4 are no more than 0.2 μm after grinding.The essence of use
It is a kind of artificial resin abrasive material of German import to grind resinous abrasive materials, and it is to remove the grinding marks that rough lapping leaves that it, which is acted on,.
Step 3：Artificial brilliant polish, the lower soleplate 2 after rinsing well and dry up after smooth grinding is dumped with flannelette upper white
Front plan of the workpiece in addition to concave surface 4 and the back side is polished with side after color antiscuffing paste, polishing time is 4min, it is desirable to thrown
Light is to sub- minute surface.
Step 4：Machine brilliant polish, wool bistrique is installed on mill quarter machine, and setting speed is 7000rpm to concave surface 4
It is polished, needs break white antiscuffing paste at wool bistrique before polishing, and the time of every workpiece polishing is 4min, polishes back concave surface
4 roughness requirements are no more than 0.1 μm.
The antiscuffing paste used in step 3 and step 4 is white antiscuffing paste, and specially 1985 polishing Chinese wax, are versatilities
Finishing polish buffing wax, its effect is titanium alloy concave surface 4 is reached sub- mirror status.
Step 5：Cleaning, is put into ultrasonic cleaner by the lower soleplate 2 after polishing, scavenging period is 15min, will polish residual
The antiscuffing paste stayed is removed, and is then dried up with air gun.
Step 6：Mirror ultrafinish, a certain amount of walnut shell abrasive material is put into grinder, and setting rotating speed is 300rpm, and the time is
2h；Start uniformly to be put into lower soleplate 2 in the grinding groove of grinder after grinder and carry out mirror ultrafinish.The walnut shell abrasive material used
It is German import mirror finish abrasive material, a certain amount of abrasive pastes need to be put into during grinding, its effect makes titanium alloy concave surface 4 reach mirror
Surface state；The grinder that the mirror ultrafinish step is used is flowing light finishing machine.Flowing light finishing machine is dry grinding machine, and
Dry grinding machine is smaller, once at most places 30 products.
Step 7：Cleaning and drying, are put into ultrasonic cleaner, scavenging period is 15min by lower soleplate 2 after mirror ultrafinish,
Cleaning is put into baking oven after completing air gun drying, and the temperature for setting baking oven is 80 DEG C, and drying time is 20min, takes out and treats after drying
Circulation.
After being ground more than and polishing Combined Processing, the outward appearance and roughness of its concave surface 4 meet roughness requirements and
Roughness and outward appearance are superior to MMP processing.
When being tested, 5 lower soleplates 2 are chosen every time, while choosing the same lower soleplate 2 of batch 5 sends out carry out MMP outer
Processing, the concave surface 4 of lower soleplate 2 that the product of company's processing carries out MMP processing with outgoing carries out roughness value detection with roughmeter.
The material object of lower soleplate 2 and roughness value after handling process processing through MMP and the present invention is contrasted, as shown in table 1, this hair
Bright mirror surface treatment technique is in the case where cost is than MMP reductions, and its roughness value of concave surface 4 is better than MMP.
The different roughness meters of processing mode concave surface 4 of table 1
Using the above-mentioned desirable embodiment according to the present invention as enlightenment, pass through above-mentioned description, related staff
Various changes and amendments can be carried out in without departing from the scope of the present invention completely.The technical scope of this invention is not
It is confined to the content on specification, it is necessary to its technical scope is determined according to right.
Claims (10)
1. soleplate spherical groove mirror surface treatment technique under a kind of artificial intervertebral disk, it is characterised in that：Titanium alloy workpiece concave surface is passed through successively
Cross rough lapping, smooth grinding, artificial brilliant polish, machine brilliant polish, cleaning, mirror ultrafinish, cleaning and stoving process step
Processing.
2. soleplate spherical groove mirror surface treatment technique under artificial intervertebral disk as claimed in claim 1, it is characterised in that：It is described slightly to grind
Mill, which is specifically included, to be put into a certain amount of coarse grained abrasive in the grinding groove of flow-ground machine, and the rotating speed for setting flow-ground machine is 130
~150rpm, the time is 20~30min, starts flow-ground machine and then workpiece is uniformly put into flow-ground machine and ground
Mill, workpiece concave surface roughness is not more than 0.4 μm after grinding.
3. soleplate spherical groove mirror surface treatment technique under artificial intervertebral disk as claimed in claim 1, it is characterised in that：The lappingout
Mill, which is specifically included, is put into a certain amount of fine grinding resinous abrasive materials in the grinding groove of flow-ground machine, sets the rotating speed of flow-ground machine
For 200~230rpm, the time is 2.5~3h, starts that workpiece is uniformly put into grinding groove after flow-ground machine and carries out smooth grinding,
Workpiece concave surface roughness is not more than 0.2 μm after grinding.
4. soleplate spherical groove mirror surface treatment technique under artificial intervertebral disk as claimed in claim 2 or claim 3, it is characterised in that：It is described
When flow-ground machine is ground, one time grinding work-piece quantity is no more than 50.
5. soleplate spherical groove mirror surface treatment technique under artificial intervertebral disk as claimed in claim 1, it is characterised in that：It is described artificial
Brilliant polish, which is specifically included, to be rinsed well after smooth grinding and workpiece after drying up is dumped after upper antiscuffing paste with flannelette and workpiece is removed
Front plan and side outside concave surface and the back side are polished, and polishing time is 2~4min, it is desirable to be polished to sub- minute surface.
6. soleplate spherical groove mirror surface treatment technique under artificial intervertebral disk as claimed in claim 1, it is characterised in that：The machine
Brilliant polish, which is specifically included, is installed on wool bistrique on mill quarter machine, and it is that 5000~7000rpm is thrown to concave surface to set speed
Light, needs dozen antiscuffing paste, the time of every workpiece polishing is 2~4min, polishes back concave surface roughness at wool bistrique before polishing
No more than 0.1 μm.
7. soleplate spherical groove mirror surface treatment technique under artificial intervertebral disk as claimed in claim 1, it is characterised in that：The cleaning
Specifically include and lower soleplate after polishing is put into ultrasonic cleaner, scavenging period is 10~15min, will polish the antiscuffing paste of residual
Remove, then dried up with air gun.
8. soleplate spherical groove mirror surface treatment technique under artificial intervertebral disk as claimed in claim 1, it is characterised in that：The minute surface
Grinding specifically includes a certain amount of walnut shell abrasive material is put into grinder, and settings rotating speed is 250~300rpm, the time for 1.5~
2h；Start that workpiece is uniformly put into the grinding groove of grinder after grinder and carry out mirror ultrafinish.
9. soleplate spherical groove mirror surface treatment technique under artificial intervertebral disk as claimed in claim 8, it is characterised in that：The minute surface
The grinder that grinding steps are used is flowing light finishing machine.
10. soleplate spherical groove mirror surface treatment technique under artificial intervertebral disk as claimed in claim 1, it is characterised in that：It is described clear
Wash and dry to specifically include and the lower soleplate after mirror ultrafinish is put into ultrasonic cleaner, scavenging period is 10min, cleaning is completed
Baking oven is put into after air gun drying, the temperature for setting baking oven is 80 DEG C, drying time is to take out after 15min, drying to wait to circulate.
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| CN108274308A (en) * | 2018-01-24 | 2018-07-13 | 西安赛福斯材料防护有限责任公司 | A kind of titanium alloy rotation body surface insulation mirror polishing method |
| CN108381302A (en) * | 2018-03-30 | 2018-08-10 | 河南梦祥纯银制品有限公司 | A kind of grinding method of metal decoration |
| CN111805306A (en) * | 2020-06-19 | 2020-10-23 | 佛山市逸合生物科技有限公司 | Polishing process of medical titanium implant |
| CN111805306B (en) * | 2020-06-19 | 2022-04-22 | 佛山市逸合生物科技有限公司 | Polishing process of medical titanium implant |
| CN113305740A (en) * | 2021-05-13 | 2021-08-27 | 上海交通大学 | Method for improving surface smoothness of artificial joint casting |
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Application publication date: 20171003 |